Towards the Temporal Streaming of Graph Data on Distributed Ledgers

Third, Allan; Tiddi, Ilaria; Bastianelli, Emanuele; Valentine, Chris and Domingue, John (2017). Towards the Temporal Streaming of Graph Data on Distributed Ledgers. Lecture Notes in Computer Science, 10577 pp. 327–332.



We present our work-in-progress on handling temporal RDF graph data using the Ethereum distributed ledger. The motivation for this work are scenarios where multiple distributed consumers of streamed data may need or wish to verify that data has not been tampered with since it was generated – for example, if the data describes something which can be or has been sold, such as domestically-generated electricity. We describe a system in which temporal annotations, and information suitable to validate a given dataset, are stored on a distributed ledger, alongside the results of fixed SPARQL queries executed at the time of data storage. The model adopted implements a graph-based form of temporal RDF, in which time intervals are represented by named graphs corresponding to ledger entries. We conclude by discussing evaluation, what remains to be implemented, and future directions.

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